./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_ac2cd5e7-f9f8-4fc4-8c1c-09035bd14f1f/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_ac2cd5e7-f9f8-4fc4-8c1c-09035bd14f1f/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ac2cd5e7-f9f8-4fc4-8c1c-09035bd14f1f/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ac2cd5e7-f9f8-4fc4-8c1c-09035bd14f1f/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ac2cd5e7-f9f8-4fc4-8c1c-09035bd14f1f/bin/utaipan/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ac2cd5e7-f9f8-4fc4-8c1c-09035bd14f1f/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f2a8d3919c0496882213752e07135061fdbafdf6 .................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 15:54:24,994 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 15:54:24,996 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 15:54:25,004 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 15:54:25,005 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 15:54:25,005 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 15:54:25,006 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 15:54:25,008 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 15:54:25,010 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 15:54:25,011 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 15:54:25,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 15:54:25,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 15:54:25,013 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 15:54:25,014 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 15:54:25,015 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 15:54:25,016 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 15:54:25,017 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 15:54:25,018 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 15:54:25,020 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 15:54:25,021 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 15:54:25,023 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 15:54:25,024 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 15:54:25,025 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 15:54:25,025 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 15:54:25,027 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 15:54:25,027 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 15:54:25,027 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 15:54:25,028 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 15:54:25,028 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 15:54:25,029 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 15:54:25,029 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 15:54:25,030 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 15:54:25,030 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 15:54:25,031 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 15:54:25,031 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 15:54:25,032 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 15:54:25,032 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 15:54:25,032 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 15:54:25,032 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 15:54:25,033 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 15:54:25,034 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 15:54:25,034 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ac2cd5e7-f9f8-4fc4-8c1c-09035bd14f1f/bin/utaipan/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf [2019-12-07 15:54:25,047 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 15:54:25,047 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 15:54:25,048 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 15:54:25,048 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 15:54:25,048 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 15:54:25,048 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 15:54:25,048 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 15:54:25,048 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 15:54:25,048 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 15:54:25,048 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 15:54:25,049 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 15:54:25,049 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 15:54:25,049 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 15:54:25,049 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 15:54:25,049 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 15:54:25,050 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 15:54:25,050 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 15:54:25,050 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 15:54:25,050 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 15:54:25,050 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 15:54:25,050 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 15:54:25,051 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-12-07 15:54:25,051 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-12-07 15:54:25,051 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-12-07 15:54:25,051 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 15:54:25,051 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 15:54:25,051 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 15:54:25,051 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 15:54:25,051 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 15:54:25,051 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 15:54:25,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 15:54:25,052 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 15:54:25,052 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 15:54:25,052 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 15:54:25,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 15:54:25,052 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 15:54:25,052 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 15:54:25,052 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ac2cd5e7-f9f8-4fc4-8c1c-09035bd14f1f/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f2a8d3919c0496882213752e07135061fdbafdf6 [2019-12-07 15:54:25,151 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 15:54:25,159 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 15:54:25,162 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 15:54:25,163 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 15:54:25,163 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 15:54:25,163 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ac2cd5e7-f9f8-4fc4-8c1c-09035bd14f1f/bin/utaipan/../../sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-1.c [2019-12-07 15:54:25,201 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ac2cd5e7-f9f8-4fc4-8c1c-09035bd14f1f/bin/utaipan/data/c1b7a3380/2f2ecd1997444342a0fa3b65d45cc30c/FLAGd38711668 [2019-12-07 15:54:25,559 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 15:54:25,560 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ac2cd5e7-f9f8-4fc4-8c1c-09035bd14f1f/sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-1.c [2019-12-07 15:54:25,563 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ac2cd5e7-f9f8-4fc4-8c1c-09035bd14f1f/bin/utaipan/data/c1b7a3380/2f2ecd1997444342a0fa3b65d45cc30c/FLAGd38711668 [2019-12-07 15:54:25,572 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ac2cd5e7-f9f8-4fc4-8c1c-09035bd14f1f/bin/utaipan/data/c1b7a3380/2f2ecd1997444342a0fa3b65d45cc30c [2019-12-07 15:54:25,574 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 15:54:25,575 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 15:54:25,576 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 15:54:25,576 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 15:54:25,578 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 15:54:25,579 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:54:25" (1/1) ... [2019-12-07 15:54:25,580 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4129eabd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:54:25, skipping insertion in model container [2019-12-07 15:54:25,581 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:54:25" (1/1) ... [2019-12-07 15:54:25,586 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 15:54:25,595 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 15:54:25,726 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:54:25,733 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 15:54:25,742 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:54:25,753 INFO L208 MainTranslator]: Completed translation [2019-12-07 15:54:25,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:54:25 WrapperNode [2019-12-07 15:54:25,753 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 15:54:25,754 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 15:54:25,754 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 15:54:25,754 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 15:54:25,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:54:25" (1/1) ... [2019-12-07 15:54:25,765 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:54:25" (1/1) ... [2019-12-07 15:54:25,777 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 15:54:25,777 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 15:54:25,777 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 15:54:25,778 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 15:54:25,783 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:54:25" (1/1) ... [2019-12-07 15:54:25,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:54:25" (1/1) ... [2019-12-07 15:54:25,785 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:54:25" (1/1) ... [2019-12-07 15:54:25,785 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:54:25" (1/1) ... [2019-12-07 15:54:25,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:54:25" (1/1) ... [2019-12-07 15:54:25,792 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:54:25" (1/1) ... [2019-12-07 15:54:25,793 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:54:25" (1/1) ... [2019-12-07 15:54:25,795 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 15:54:25,795 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 15:54:25,795 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 15:54:25,795 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 15:54:25,796 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:54:25" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ac2cd5e7-f9f8-4fc4-8c1c-09035bd14f1f/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 15:54:25,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 15:54:25,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-12-07 15:54:25,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 15:54:25,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 15:54:25,837 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 15:54:25,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 15:54:25,993 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 15:54:25,993 INFO L287 CfgBuilder]: Removed 5 assume(true) statements. [2019-12-07 15:54:25,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:54:25 BoogieIcfgContainer [2019-12-07 15:54:25,994 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 15:54:25,994 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 15:54:25,994 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 15:54:25,996 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 15:54:25,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 03:54:25" (1/3) ... [2019-12-07 15:54:25,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7763c36f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:54:25, skipping insertion in model container [2019-12-07 15:54:25,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:54:25" (2/3) ... [2019-12-07 15:54:25,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7763c36f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:54:25, skipping insertion in model container [2019-12-07 15:54:25,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:54:25" (3/3) ... [2019-12-07 15:54:25,998 INFO L109 eAbstractionObserver]: Analyzing ICFG SyntaxSupportPointer01-1.c [2019-12-07 15:54:26,004 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 15:54:26,009 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2019-12-07 15:54:26,016 INFO L249 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2019-12-07 15:54:26,030 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 15:54:26,030 INFO L374 AbstractCegarLoop]: Hoare is false [2019-12-07 15:54:26,030 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 15:54:26,030 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 15:54:26,030 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 15:54:26,030 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 15:54:26,030 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 15:54:26,031 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 15:54:26,042 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-12-07 15:54:26,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-12-07 15:54:26,046 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:54:26,047 INFO L410 BasicCegarLoop]: trace histogram [1, 1] [2019-12-07 15:54:26,047 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 15:54:26,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:54:26,051 INFO L82 PathProgramCache]: Analyzing trace with hash 2205, now seen corresponding path program 1 times [2019-12-07 15:54:26,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 15:54:26,058 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986384586] [2019-12-07 15:54:26,058 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:54:26,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:54:26,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:54:26,157 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986384586] [2019-12-07 15:54:26,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:54:26,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 15:54:26,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735677226] [2019-12-07 15:54:26,160 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 15:54:26,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 15:54:26,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 15:54:26,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 15:54:26,171 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2019-12-07 15:54:26,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:54:26,208 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2019-12-07 15:54:26,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 15:54:26,209 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-12-07 15:54:26,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:54:26,215 INFO L225 Difference]: With dead ends: 18 [2019-12-07 15:54:26,215 INFO L226 Difference]: Without dead ends: 17 [2019-12-07 15:54:26,216 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 15:54:26,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-12-07 15:54:26,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-12-07 15:54:26,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-12-07 15:54:26,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2019-12-07 15:54:26,237 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 2 [2019-12-07 15:54:26,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:54:26,237 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2019-12-07 15:54:26,237 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 15:54:26,237 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2019-12-07 15:54:26,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-12-07 15:54:26,238 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:54:26,238 INFO L410 BasicCegarLoop]: trace histogram [1, 1] [2019-12-07 15:54:26,238 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 15:54:26,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:54:26,238 INFO L82 PathProgramCache]: Analyzing trace with hash 2206, now seen corresponding path program 1 times [2019-12-07 15:54:26,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 15:54:26,239 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100627939] [2019-12-07 15:54:26,239 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:54:26,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:54:26,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:54:26,267 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100627939] [2019-12-07 15:54:26,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:54:26,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 15:54:26,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128221780] [2019-12-07 15:54:26,268 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 15:54:26,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 15:54:26,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 15:54:26,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 15:54:26,269 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 3 states. [2019-12-07 15:54:26,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:54:26,287 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2019-12-07 15:54:26,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 15:54:26,287 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-12-07 15:54:26,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:54:26,287 INFO L225 Difference]: With dead ends: 12 [2019-12-07 15:54:26,287 INFO L226 Difference]: Without dead ends: 12 [2019-12-07 15:54:26,288 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 15:54:26,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-12-07 15:54:26,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-12-07 15:54:26,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-07 15:54:26,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-12-07 15:54:26,290 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 2 [2019-12-07 15:54:26,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:54:26,290 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-12-07 15:54:26,290 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 15:54:26,290 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-12-07 15:54:26,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 15:54:26,291 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:54:26,291 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 15:54:26,291 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 15:54:26,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:54:26,291 INFO L82 PathProgramCache]: Analyzing trace with hash 2072725194, now seen corresponding path program 1 times [2019-12-07 15:54:26,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 15:54:26,291 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756483243] [2019-12-07 15:54:26,291 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:54:26,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:54:26,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:54:26,315 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756483243] [2019-12-07 15:54:26,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:54:26,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 15:54:26,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774913553] [2019-12-07 15:54:26,315 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 15:54:26,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 15:54:26,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 15:54:26,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 15:54:26,316 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2019-12-07 15:54:26,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:54:26,325 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2019-12-07 15:54:26,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 15:54:26,326 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-12-07 15:54:26,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:54:26,327 INFO L225 Difference]: With dead ends: 11 [2019-12-07 15:54:26,327 INFO L226 Difference]: Without dead ends: 11 [2019-12-07 15:54:26,327 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 15:54:26,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-12-07 15:54:26,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-12-07 15:54:26,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-12-07 15:54:26,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2019-12-07 15:54:26,329 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 6 [2019-12-07 15:54:26,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:54:26,329 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2019-12-07 15:54:26,329 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 15:54:26,329 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2019-12-07 15:54:26,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 15:54:26,329 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:54:26,329 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:54:26,330 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 15:54:26,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:54:26,330 INFO L82 PathProgramCache]: Analyzing trace with hash -975911827, now seen corresponding path program 1 times [2019-12-07 15:54:26,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 15:54:26,330 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121510756] [2019-12-07 15:54:26,330 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:54:26,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:54:26,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:54:26,368 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121510756] [2019-12-07 15:54:26,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:54:26,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 15:54:26,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695199080] [2019-12-07 15:54:26,369 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 15:54:26,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 15:54:26,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 15:54:26,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 15:54:26,369 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 4 states. [2019-12-07 15:54:26,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:54:26,390 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2019-12-07 15:54:26,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 15:54:26,390 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-12-07 15:54:26,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:54:26,391 INFO L225 Difference]: With dead ends: 10 [2019-12-07 15:54:26,391 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 15:54:26,391 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 15:54:26,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 15:54:26,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 15:54:26,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 15:54:26,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 15:54:26,391 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2019-12-07 15:54:26,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:54:26,392 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 15:54:26,392 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 15:54:26,392 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 15:54:26,392 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 15:54:26,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 03:54:26 BoogieIcfgContainer [2019-12-07 15:54:26,395 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 15:54:26,395 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 15:54:26,396 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 15:54:26,396 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 15:54:26,396 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:54:25" (3/4) ... [2019-12-07 15:54:26,398 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 15:54:26,405 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2019-12-07 15:54:26,405 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-12-07 15:54:26,406 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-12-07 15:54:26,433 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ac2cd5e7-f9f8-4fc4-8c1c-09035bd14f1f/bin/utaipan/witness.graphml [2019-12-07 15:54:26,433 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 15:54:26,435 INFO L168 Benchmark]: Toolchain (without parser) took 859.52 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 939.4 MB in the beginning and 1.0 GB in the end (delta: -75.7 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-12-07 15:54:26,435 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 955.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:54:26,435 INFO L168 Benchmark]: CACSL2BoogieTranslator took 177.96 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -152.6 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-12-07 15:54:26,436 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.25 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:54:26,436 INFO L168 Benchmark]: Boogie Preprocessor took 17.37 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:54:26,436 INFO L168 Benchmark]: RCFGBuilder took 198.72 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. [2019-12-07 15:54:26,436 INFO L168 Benchmark]: TraceAbstraction took 401.00 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 49.7 MB). Peak memory consumption was 49.7 MB. Max. memory is 11.5 GB. [2019-12-07 15:54:26,437 INFO L168 Benchmark]: Witness Printer took 37.98 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 15:54:26,438 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 955.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 177.96 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -152.6 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 23.25 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.37 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 198.72 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 401.00 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 49.7 MB). Peak memory consumption was 49.7 MB. Max. memory is 11.5 GB. * Witness Printer took 37.98 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 15]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 17]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 19]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 15]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 19]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 17]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 19]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 17]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 13]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 12 error locations. Result: SAFE, OverallTime: 0.3s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 20 SDtfs, 34 SDslu, 3 SDs, 0 SdLazy, 40 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 415 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...